Standard Practice for Conducting an Interlaboratory Test Program to Determine the Precision of Test Methods for Construction Materials

Importancia y uso:

4.1 This practice provides requirements for planning and conducting an interlaboratory study to obtain data to develop single-operator and multilaboratory precision statements for a test method. It includes methods to evaluate data consistency before carrying out the calculations to develop the precision statement. The procedures are compatible with those in Practice E691.

4.2 The ILS data obtained from this practice are intended for developing the precision values for writing single-operator and multilaboratory precision statements in accordance with Practice C670.

4.3 Appendix X1 provides an example to illustrate the calculations to obtain the precision values of the test method from the ILS data. This may be used to check a user-developed electronic spreadsheet for carrying out the calculations.

4.4 Appendix X2 discusses the additional calculations required for an interlaboratory study of a test method that includes making test specimens as part of the procedure. In this case, batch-to-batch variability needs to be considered.

4.5 Appendix X3 discusses the use of analysis of variance as an alternative approach to obtain the precision values from the ILS data.

Subcomité:

C09.94

Referida por:

C1077-24, C1202-22E01, C0403_C0403M-23, D6607-21, C1202-22E01, E3209_E3209M-20, C1077-24, D6648-08R16, C0670-24A, C1077-24, C0403_C0403M-23, C1067-20, C0796_C0796M-19, D0653-24A

Volúmen:

04.02

Número ICS:

91.100.01 (Construction materials)

Palabras clave:

coefficient of variation; components of variance; data consistency; interlaboratory study; multilaboratory precision; single-operator precision; standard deviation;